There is slightly conflicting info between the user manual and the wiki. The user manual refers to oil, but the wiki calls for lithium grease on the rails. "Clean the X and Y linear rails, and the Z leadscrew, of grease, then apply a fresh coat to each - a dot of white lithium grease in each of the ...

Thanks Ed, That's what I was hoping to avoid :-( That's exactly what happened with my nozzle heater wire in this thread: http://forum.makergear.com/viewtopic.php?f=7&t=5217 As usual, you were right on the money. I jiggled the wire at the same spot the heater wire had broken and that IDed the problem...

Well, may have spoken too soon. The temp fluctuation issue came back, so I changed the entire hot end (including another new thermistor). Thankfully, I have not gotten another MAXTEMP error, just the temp fluctuations. Thoughts on where to look next? Here is another screenshot showing the temp after...

Thanks everyone for the input. The thermistor pulled out really easily, meaning the set screw had likely come loose. I tightened that down and all seems right with the world now. Just finished the 13 hour print that had thrown the error previously. Here is a printout of the temperature screen from O...

Came home to a stopped printer that had kicked out a MAXTEMP Error. Revision E with a V4 hotend. I was printing a long PETG print at 245C. Rebooted and all seems functional. Is this a sign of future problems? Any ideas what would cause this? IIRC, the V4 is rated to over 300C, so it should have been...

Any link to the stl file(s)?

This looks good. I bought something similar off Amazon, but the alarm isn't loud enough for me. I'd like to make this.
Any chance you can post the STL files and part list?

In an attempt to address this problem, I mounted a fan behind the printer facing the nozzle. It improved the back of the print markedly, but it also degraded the front. It seems the competing air pressures reduced the amount of fan blowing from the front. I've reviewed the modification section and t...

Looking for an elegant solution to getting more cooling on the back side of prints. In the photo below, the front of the printer is on the left. The back side of the print (on the right) gets much less cooling and as a result, is much less smooth. I've seen posts where some suggest putting a desk fa...

Thanks to those that replied. Overextrusion seems to be the issue. Dialed back the extrusion multiplier from .92 to .82 (after a few tests) and the issue is gone.